Ventilators



March 29, 1966 U R 3,242,848

VENTILATORS Filed Sept. 15, 1963 IN VEN TOR.

UnitedStates Patent 3,242,848 VENTILATORS Rudolph H. Guenther, 2336 Milwaukee Ave., Chicago, Ill. Filed Sept. 13, 1963, Ser. No. 308,698 2 Claims. (Cl. 9868) My invention relates to ventilators of the rotary type, which involve a hood mounted rotatably on a support. The invention is an improvement over the supporting structure covered in myv Patent No. 2,523,620 issued September 26,1950; and the main object of the improvement is to simplify the support in a manner to use less material than before and eliminate welding and other work which increase the cost of the ventilator.

A further object is to employ a center unit in the support which is in one piece and may be produced in a forming die and punch press in a very short time.

Another object is to fasten the top of the center unit in the doubled walls of the ventilator vane in order to make a rigid joint between the ventilator hood and its support.

A still further object is to use a part of the center unit as a lateral brace between the support and the lower part of the ventilator hood.

A better understanding of the invention may be gained by reference to the accompanying drawing, in which:

FIG. 1 is a front elevation of the improved ventilator;

FIG. 2 is a side view, partly on the section line 22 of FIG. 1;

FIG. 3 is a plan section on the line 3-3 of FIG. 1; and

FIG. 4 is a plan section of the top part of the ventilator, taken on the line 4-4 of FIG. 2.

Referring specifically to the drawing, denotes the hood of the ventilator, and 12 its base, the latter being in the form of a sturdy horizontal ring. It is noted that the hood is pressed with a horizontal bead near the bottom, the latter depending as a plain skirt. The bead serves as a reinforcement; and the skirt at the bottom serves to shed water and snow from the outer side of the ventilator. Braces 12a in the ring meet the bottom portion of the vertical spindle 13 on which the hood revolves, the braces being welded to such bottom portion as indicated at 12b. It is noted that the braces are directed edgewise of the ventilator flow and occur in the upper portion of the base ring 12, leaving room under them for the insertion of a flue or exhaust conduit designed to connect with the ventilator. Also, a vertical passage occurs between the base ring 12 and the wall of the ventilator hood, such passage allowing the end portion of a flue or exhaust conduit to be fitted around the ring. It is further noted that the hood has wings 10a bent out at its open side to create a lateral passage for currents issuing from the ventilator, with an expanding influence on the same. The wings extend from bends 10b which constitute vertical reinforcements of the hood at the sides.

The aforesaid patent shows that the center spindle rises in the ventilator hood, and is pointed at the upper end for the rotary support of a frame which is attached to the top and back of the hood. The unit employed in the present embodiment for this purpose is made in a single length of strip material instead of the box-like frame shown in the patent.

The medial portion of the unit just referred to is a vertical bar 15 extending in spaced relation alongside the spindle 13. The bar 15 has similar upper and lower diagonal bends 15a and 15b intersecting the spindle, these bends being punched with holes 150 for the free passage of the spindle.

Beyond the upper bend 15a, the bar 15 is continued with an upper portion 15d which is spaced from the spindle on the side opposite from the bar. The portion 15d 15 continued toward such side with a horizontal bend 15e which rests on the point 13a of the spindle. The hor1zontal bend 15s is continued with an upward bend 15 whose initial portion is short and substantially in the plane of the bar 15, but twistedas shown at 15gto pro ect a stem 1511 in upward direction which is in a plane at right-angles to that of the bar 15, and made with a perforation 15i. The lower bend 15b of the unit 1s continued with a horizontal brace 15j which terminates with a downbend 15k made with a perforation.

When the hood 10 is mounted over the support described in the foregoing, the unit 15 may be located in, or should be turned to a position meeting the back wall of the hood near the bottom, as shown in FIGS. 1 and 2. Now, the top stern 1511 projects into the forepart of the hood vane 10a, which is usually of double-wall constructron for purposes of rigidity. This construction is utilized for receiving the stem 15h between the vane walls, as shown in FIG. 4, and securing the vane to the stem by the indentations shown in the same figure and known as a button punch. With the top of the hood secured to its support as just described, the bottom is fastened by driving a rivet 17 through the downbend 15k and the back wall of the hood, as shown.

It is now apparent that the unit which combines with the spindle 13 and base ring 12 to form. a support for the hood is a single strip which is shaped in ways to both fasten the hood for support and rotation and secure the proper journaling thereof on the spindle 13. While the brace 15j applies to the back wall of the hood near the bottom in the same manner as the brace 13 in the aforesaid patent, it is noted that the top stern 15h of the unit 15 is made with a twist 15g in order to aline it for insertion between the walls of the hood vane 10a, where it does not only secure the vane to the unit 15, but also reinforces the vane from getting out of shape in case it strikes some object during handling or shipping. Further, the diagonal bends 15a and 15b of the unit are far apart along the spindle and therefore aline the unit with the same, eliminating the need of cross-bars and fastening means for them. Further, the diagonal bends provide long bearings for the spindle, and enable the unit to be made narrow in order to save material. Further, the diagonal form of the bends 15a and 15b creates bearings for the spindle 13 whose sides loosen dirt and dust settling in the bearings, and furnish downward paths for such deposits to escape from the bearings. Further, the simple horizontal bend 15e from the stock of the unit provides the necessary bearing on the point of the spindle. Further, in case different hood sizes place the back of the hood nearer or farther from the spindle, it is only necessary to make the unit 15 from a strip of a length allowing for a bottom brace 15 of corresponding length. Finally, it is apparent that the improved unit may be fashioned in a simple forming die and perforated at the proper points in a punch press, lending the improved ventilator the advantages of economy in material and production, as well as simplicity and durability.

I claim:

1. The combination with a ventilator support having an upstanding center spindle pointed at its upper end, and a hood around the spindle having a lateral opening; of a unit journaling the hood for rotation about the spindle comprising a strip secured in the top of the hood and offset toward one side to form a horizontal portion adapted to rest on the point of the spindle, said strip having a downward continuation offset toward the other side to define initial and return diagonal portions with perforations forming bearings for the spindle, the sides of the perforations effective during the rotation of the hood to loosen material tending to clog the bearings for discharge by the inclination of said diagonal portions, and a bottom portion extended toward the first-named side and secured to the wall of the hood opposite from said opening.

2. The combination with a ventilator support having an upstanding center spindle pointed at its upper end, and a hood around the spindle having a lateral opening; of a unit journaling the hood for rotation about the spindle comprising a strip secured in the top of the hood and offset toward one side to form a horizontal portion adapted to rest on the point of the spindle, said strip having a downward continuation ofiset toward the other side to define an initial diagonal portion, a continuing References Cited by the Examiner UNITED STATES PATENTS 966,370 8/1910 Thorrnann 98-71 1,634,184 6/1927 Goldstein 9871 2,018,020 10/1935 Guenther 98-71 X 2,523,620 9/ 1950 Guenther 9868 2,563,272 7/1951 Rachlin 9871 JOHN F. OCONNOR, Primary Examiner.

WILLIAM F. ODEA, Assistant Examiner. 

1. THE COMBINATION WITH A VENTILATOR SUPPORT HAVING AN UPSTANDING CENTER SPINDLE POINTED AT ITS UPPER END, AND A HOOD AROUND THE SPINDLE HAVING A LATERAL OPENING; OF A UNIT JOURNALING THE HOOD FOR ROTATING ABOUT THE SPINDLE COMPRISING A STRIP SECURED IN THE TOP OF THE HOOD AND OFFSET TOWARD ONE SIDE TO FORM A HORIZONTAL PORTION ADAPTED TO REST ON THE POINT OF THE SPINDLE, SAID STRIP HAVING A DOWNWARD CONTINUATION OFFSET TOWARD THE OTHER SIDE TO DEFINE INITIAL AND RETURN DIAGONAL PORTIONS WITH PERFORATIONS FORMING BEARINGS FOR THE SPINDLE, THE SIDES OF THE PERFORATIONS EFFECTIVE DURING THE ROTATION OF THE HOOD TO LOOSEN MATERIAL TENDING TO CLOG THE BEARINGS FOR DISCHARGE BY THE INCLINATION OF SAID DIAGONAL PORTIONS, AND A BOTTOM PORTION EXTENDED TOWARD THE FIRST-NAMED SIDE AND SECURED TO THE WALL OF THE HOOD OPPOSITE FROM SAID OPENING. 